Netanyahu addressed a group of foreign journalists and warned of the danger Iran poses.

"The militant Shiites in Iran are openly racing and openly boasting that they're racing to develop nuclear weapons with the explicit, announced goal of wiping Israel from the face of the earth."

But he also warned a nuclear Iran poses a danger not just to Israel.

"This is not merely a local problem but a global problem. Obviously if Iran possesses nuclear weapons, everything we've been talking about will pale in comparison because the power to extend power, to threaten, to realize the threats, to make good on the threats would be on a level that we have not seen, nor can we readily imagine," Netanyahu said.

But how do you stop Iran? Netanyahu advocates financial divestment from Iran as one means to stop its pursuit of nuclear weapons. But he believes all options - including the military option - need to remain on the table.

"I said a year ago the year was 1938 and Iran is Germany and it's racing to acquire nuclear weapons," he said. "Well, if that's the case we're in 1939 and intelligence chiefs have said it will take Iran three years to acquire the critical knowledge to produce a weapon."

He continued, "We now have about two years left and as far as I know they haven't changed their assessment. So this is a problem we all face."

With time - and options - running out it remains to be seen how the world will respond to Netanyahu's warning of perhaps the greatest threat to peace in our time.